closed contract. Whose terms constitute the entire agreement between the contracting parties and no clause or provision can be changed or modified without mutual consent. An insurance contract, for example, is a closed contract whereas a construction contract may not be one. See also open contract.
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force. The volt is named in honour of the Italian physicist Alessandro Volta (1745â1827), who invented the voltaic pile, possibly the first chemical battery.
Static electricity is also a form of electricity which is measured in volts. Voltage is the electric potential between two different points. It could also be used to refer to the difference in electric potential energy of a unit test charge transported between two points. A voltage may represent a source of energy or it could represent lost, used or stored energy. Voltage is the pressure of pushing electrons along in a circuit.